Submission #578698

#	Time	Username	Problem	Language	Result	Execution time	Memory
578698		WongChun1234	Last supper (IOI12_supper)	C++14	100 / 100	155 ms	74796 KiB

advisor

#include "advisor.h"
#include<bits/stdc++.h>
using namespace std;
int c[100050],curr[100050],lpos[100050],opt[200050];
deque<int> ap[100050];
priority_queue<pair<int,int>> pq;
void ComputeAdvice(int *C, int n, int k, int m) {
	for (int i=0;i<n;i++) c[i]=C[i];
	for (int i=0;i<n;i++) ap[c[i]].push_back(i);
	for (int i=0;i<n;i++) ap[i].push_back(2e9);
	for (int i=0;i<k;i++) curr[i]=lpos[i]=i,pq.push({ap[i][0],i});
	for (int i=k;i<n;i++) curr[i]=lpos[i]=-1;
	for (int i=0;i<n;i++){
		int choice;
		lpos[c[i]]=k+i;
		if (curr[c[i]]!=-1){
			choice=32767;
		}else{
			choice=curr[c[i]]=curr[pq.top().second];
			opt[lpos[pq.top().second]]=1;
			curr[pq.top().second]=-1;
			pq.pop();
		}
		while (ap[c[i]].front()<=i) ap[c[i]].pop_front();
		pq.push({ap[c[i]].front(),c[i]});
	}
	for (int i=0;i<n+k;i++) WriteAdvice(opt[i]);
}

assistant

#include "assistant.h"
#include<bits/stdc++.h>
using namespace std;
int pos[100050];
priority_queue<int> dump;
void Assist(unsigned char *A, int n, int k, int R) {
	for (int i=0;i<k;i++) pos[i]=i;
	for (int i=k;i<n;i++) pos[i]=-1;
	for (int i=0;i<k;i++) if (A[i]) dump.push(i);
	for (int i=0;i<n;i++){
		int nxt=GetRequest();
		int choice=0;
		if (pos[nxt]!=-1){
			if (A[i+k]) dump.push(nxt);
		}else{
			PutBack(dump.top());
			pos[dump.top()]=-1;
			dump.pop();
			pos[nxt]=1;
			if (A[i+k]) dump.push(nxt);
		}
	}
}

Compilation message (stderr)

advisor.cpp: In function 'void ComputeAdvice(int*, int, int, int)':
advisor.cpp:15:7: warning: variable 'choice' set but not used [-Wunused-but-set-variable]
   15 |   int choice;
      |       ^~~~~~

assistant.cpp: In function 'void Assist(unsigned char*, int, int, int)':
assistant.cpp:13:7: warning: unused variable 'choice' [-Wunused-variable]
   13 |   int choice=0;
      |       ^~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 9 / 9
• Subtask 4: 35 / 35
• Subtask 5: 39 / 39